<template>
  <view>
    <!-- 搜索框 -->
    <view class="search-box">
      <uni-search-bar @confirm="search" @input="input" :radius="100" placeholder="搜索" cancelButton="none" ></uni-search-bar>
    </view>
    <!-- 数据查询区 -->
    <view class="sugg-list" v-if="kw.length!==0">
      <view class="sugg-item" v-for="(item,i) in searchList" :key="i" @click="gotoDetail(item)">
        <view class="goods-name">
          {{item.goods_name}}
        </view>
        <uni-icons type="arrowright"></uni-icons>
      </view>
    </view>
    <!-- 历史记录 -->
    <view class="history-box" v-else>
      <view class="history-title">
        <text>搜索历史</text>
        <uni-icons type="clear" @click="cleanHistory"></uni-icons>
      </view>
      <view class="history-list">
        <uni-tag :text="item" v-for="(item,i) in saveHistoryList" :key="i" @click="gotoGoodsList(item)"></uni-tag>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        timer:null,
        kw:'',
        searchList:[],
        historyList:[]
      };
    },
    methods:{
      input(e){
        // this.getSearchList()
        clearTimeout(this.timer)
        this.timer = setTimeout(()=>{
          this.kw = e
          this.getSearchList()
          this.pushHistoryList()
        },500)
      },
      async getSearchList(){
        if(this.kw.length === 0) return this.searchList = []
        const {data:res} = await uni.$http.get('/api/public/v1/goods/qsearch',{query:this.kw})
        if(res.meta.status!==200) return uni.$showMsg()
        this.searchList = res.message
      },
      gotoDetail(item) {
        console.log(item.goods_id)
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id='+item.goods_id
        })
      },
      pushHistoryList() {
        const set = new Set(this.historyList)
        set.delete(this.kw)
        set.add(this.kw)
        this.historyList = Array.from(set)
        // 保存到缓存
        uni.setStorageSync('kw',JSON.stringify(this.historyList))
      },
      cleanHistory(){
        this.historyList = []
        uni.setStorageSync('kw','')
      },
      gotoGoodsList(item){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?query='+item
        })
      }
    },
    computed:{
      saveHistoryList(){
        return [...this.historyList].reverse()
      }
    },
    onLoad(){
      this.historyList = JSON.parse(uni.getStorageSync('kw')||'[]')
    }
  }
</script>

<style lang="scss">
  .search-box {
    position: sticky;
    top: 0;
    z-index: 99;
  }
  .sugg-list {
    padding: 0 10px;
  }
  .sugg-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 12px;
    border: 1px solid #efefef;
    .goods-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
  }
  .history-box {
    padding: 0 5px;
    .history-title{
      display: flex;
      justify-content: space-between;
      height: 40px;
      align-items: center;
      font-size: 13px;
      border-bottom: 1px solid #efefef;
    }
    .history-list {
      display: flex;
      flex-wrap: wrap;
      .uni-tag {
        margin-top: 5px;
        margin-right: 5px;
      }
    }
  }
</style>
